For this recipe I used Anaheim peppers, they are thinner and longer in comparison to bell peppers. Bell peppers can be used as a substitute but they need to be green!
I used Roma tomatoes for this salad as they have that Mediterranean flavor and are my personal favorite; as a substitute, it can be used cherry tomatoes, grape tomatoes, heirloom tomatoes, etc.
If for any reason you can't grill peppers as a second option would be roasting them in the oven;
A crucial step to get the peppers to peel easily is to cover them with foil or add them in a ziplock bag; this way to steam would stay inside they would soften up and the skin would come out easy;